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LT3433EFE#TR

更新时间： 2024-02-16 02:09:37
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
12页 184K
描述
LT3433 - High Voltage Step-Up/Step-Down DC/DC Converter; Package: TSSOP; Pins: 16; Temperature Range: -40°C to 85°C

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LT3433EFE#TR 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：TSSOP,
针数：16Reach Compliance Code：compliant
风险等级：5.16模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：60 V
最小输入电压：4 V标称输入电压：13.8 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：16
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.9 A封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：250
认证状态：Not Qualified座面最大高度：1.1 mm
表面贴装：YES切换器配置：BOOST
最大切换频率：230 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

LT3433EFE#TR 数据手册

 浏览型号LT3433EFE#TR的Datasheet PDF文件第2页浏览型号LT3433EFE#TR的Datasheet PDF文件第3页浏览型号LT3433EFE#TR的Datasheet PDF文件第4页浏览型号LT3433EFE#TR的Datasheet PDF文件第5页浏览型号LT3433EFE#TR的Datasheet PDF文件第6页浏览型号LT3433EFE#TR的Datasheet PDF文件第7页 
Final Electrical Specifications  
LT3433  
High Voltage  
Step-Up/Step-Down  
DC/DC Converter  
September 2003  
U
FEATURES  
DESCRIPTION  
The LT®3433 is a 200kHz fixed-frequency current mode  
switching regulator that provides both step-up and step-  
down regulation using a single inductor. The IC operates  
over a 4V to 60V input voltage range making it suitable for  
use in various wide input voltage range applications such  
as automotive electronics that must withstand both load  
dump and cold crank conditions.  
■
Automatic Step-Up and Step-Down Conversion  
■
Uses a Single Inductor  
■
Wide 4V to 60V Input Voltage Range  
■
VOUT from 3.3V to 20V  
■
Dual Internal 500mA Switches  
■
100µA No-Load Quiescent Current  
■
Low Current Shutdown  
■
±1% Output Voltage Accuracy  
Internal control circuitry monitors system conditions and  
converts from single switch buck operation to dual switch  
bridged operation when required, seamlessly changing  
between step-down and step-up voltage conversion.  
Optional Burst Mode® operation reduces no-load quies-  
cent current to 100µA and maintains high efficiencies with  
light loads.  
■
200kHz Operating Frequency  
■
Boosted Supply Pin to Saturate High Side Switch  
■
Frequency Foldback Protection  
Current Limit Foldback Protection  
■
■
Current Limit Unaffected by Duty Cycle  
16-lead Thermally Enhanced TSSOP Package  
■
U
APPLICATIO S  
Current limit foldback and frequency foldback help pre-  
vent inductor current runaway during start-up. Program-  
mablesoft-starthelpspreventoutputovershootatstart-up.  
■
12V Automotive Systems  
■
Wall Adapter Powered Systems  
■
Battery Power Voltage Buffering  
The LT3433 is available in a 16-lead thermally enhanced  
TSSOP package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
4V to 60V to 5V DC/DC Converter  
with Burst Mode Operation  
V
OUT  
5V  
L1  
100µH  
4V ≤ V ≤ 8.5V: 125mA  
8.5V ≤ V ≤ 60V: 350mA  
IN  
B160A  
Maximum Output  
Current vs VIN  
CoEv DU1352-101M  
IN  
Efficiency  
500  
400  
300  
200  
90  
80  
70  
60  
50  
40  
30  
20  
B120A  
1N4148  
47µF  
V
= 5V  
OUT  
V
SW_L  
BST  
BUCK  
0.1µF  
V
V
IN  
= 13.8V  
IN  
SW_H PWRGND  
LT3433  
4V TO 60V  
V
V
OUT  
IN  
+
1N4148  
0.1µF  
2.2µF  
BURST_EN  
V
V
IN  
= 4V  
BIAS  
1nF  
100pF  
BRIDGED  
V
V
SHDN  
SS  
C
68k  
100  
0
FB  
100k  
0.5%  
305k  
0.5%  
SGND  
0.01µF  
0
20  
30  
(V)  
40  
50  
60  
10  
0.1  
1
10  
100  
1000  
V
IN  
OUTPUT CURRENT (mA)  
3433 TA01  
3433 TA01c  
3433 TA01b  
3433ia  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tation that the interconnection of its circuits as described herein will notinfringe onexisting patent rights.  
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